My most recent immigrant ancestor is probably a Scandinavian/North German fellow who entered the US in the late 1800’s. We actually don’t know all that much about him as he disappeared shortly after knocking great-grand-mum up. There may or may not have been a shotgun wedding involved. Details are sketchy. 
My mother’s biomom was the child of two immigrant parents from Beirut. (My great-grandparents.) The rest of all the ancestors that we know of (I count my my mom’s adoptive family in there as well) have been around here for a fairly long time. The newest ones were in the U.S. by the early1800’s (from all sorts of places, Prussia, Germany, etc.), people with my surname may have all descended from an immigrant from England circa 1670.
All four of my grandparents were born in New York City between 1912 and 1924. However, not one of my great-grandparents was born in the United States. All eight of them immigrated from various places in Europe (some with their parents, my great-great grandparents) between 1880 and 1906. Some came married, some married here (I found several of my great-grandparents’ marriage certificates here in NYC).
Zev Steinhardt
I’m a newbie. My mother came with her parents from GB in the mid-50s. On my father’s side, they all trickled in through the second half of the 19th century. No Ellis Islanders on either side.
All four of my grandparents were immigrants. My grandmothers both came over circa 1915, my grandfathers somewhat earlier.
Sorry, I was tired and about to go to bed last night when I posted. I should have put that she came from England. A lot of British immigrants arrived during the 1950s-1970s, quite a few on assisted passage, but my mum and grandma paid their own way (yes, I have a double banger - two immediate ancestors arriving here on the same day.)
Not just British, though – Dutch immigration peaked from just after World War II to the 1960s, and the same period is known as one for major immigration flows from the Pacific Islands.
My mother came over to the US from England in the mid 1950’s and never went back. She eventually became a citizen here.
My father’s parents both came from Greece. My father spoke Greek until he went to kindergarden. You can tell how little English my grandfather spoke by the forms he filled out when he went through immigration. He mispelled everything, including his own name (he spelled it Gohn on the form instead of John).
Mrs Geek has recently taken an interest in geneology and found that she has an ancestor that came over on the Mayflower. She’s in the process of getting her documentation together so that she can join the Mayflower Society. Most of her ancestors came over in the 1700’s. The latest immigrant on her side is probably around 1790.
My mother moved to New York City from Puerto Rico when she was about a year old.
Or my paternal great-great grandparents who moved from Canada to Louisiana (French-Canadian.)
Or my maternal great-great-great grandparents who moved from Spain to Puerto Rico.
Mother, Ireland, 1958.
Most recent in Time on my maternal line a Great-Grandmother Came to America from Ireland in 1910
Most recent in Relation my Paternal line my Grandfather came over from Ireland as an infant in 1898
Anne Willden, from Sheffield, England, came across to Louisiana and then was a covered-wagon pioneer to Utah in 1849, when she was four.
In Utah, she met and married Niels Christian Johnson, from Copenhagen, Denmark, in 1860 (that’s age 15). He was born in 1832, so he was 28 at the time and had been in the US since 1949 as well.
These were my great-great-grandparents.
My great-grandfather, from Switzerland, in 1894, I believe.
My maternal grandfather came to New York from Russia (probably now Poland) in about 1891 at the age of three. All my other grandparents were born here, and their parents came not too long before this.
Hey! I’ve been on that train!
It would be really interesting to track this down to get free of the legend parts. (I’m not mocking your family history; we have solemnly passed down the story of the ancestor who was supposed to have been a noble who fled Bismarck, even though no one in Germany recognizes the name.) I’m just curious whether she was evading Soviets (subsequent to 1917) or Czarists (late 19th century) and why her flight went through Southwestern Germany (although there may, indeed, be a region of Lithuania called the Black Forest; I have never encountered it).
Our German forebears (Dad’s side, five and six generations back) came over to Biloxi (and, maybe, Mobile) in the 1850s, eventually winding up in Louisville, KY. Our Irish ancestry (Mom’s side, six and seven generations) showed up on this side of the Atlantic shortly before 1800 (raising suspicions that one or more of them might have been part of the '98) but, family lore only takes them back to Corning, NY, after which they migrated to Daviess County, IN. My grandparents all migrated from Louisville and Daviess County to Indianapolis where my folks met.
Dossetario Rodriguez y Lama, my great-grandfather, came over from Lugo, Galicia, Spain in the 1920’s. The story I’ve gotten is that his mother sent him to America to avoid getting sent off to a foreign war (perhaps in Morocco).
Around the same time, his future wife’s parents came over from Poland, possibly Krakow area, and everyone ended up in a coal mining town in West Virginia. The rest, as they say, is history.
All of my other ancestors, as far as I know, are German and English stock that have been here since before 1776.
There’s a Daviess County, Ky., too – constantly misprounounced.
My great-grandmother (father’s mother’s mother) came to the U.S. from Sweden, but I’m not sure when.
The story in my family is that my great grandfather was smuggled out of Schleswig-Holstein by his mother to prevent him from being forced into Bismarck’s army in the 1870’s.
The most recent immigrant was my great great great grandmother who was born in Austin Colony, Mexico. Her parents came to Austin from the USA. She"immigrated" to the Republic of Texas and then again to the USA when that area changed ownership. The funny thing is that my mother was rabidly anti-Mexican…I didn’t have the heart to tell her this bit of history from Dad’s side, as she was quite elderly when I found this out… but it was fun to laugh to myself at her wrongheadedness.
As an interesting aside, I have an ancestor who apparently came to the Colonies in 1643.
Of the relatives who can be clearly identified (some of them can not), the most recent is one of my great-grandfathers, who moved from Switzerland to Salt Lake City with his family sometime around 1906 or 1907.