Once you start getting back to the 1860s and earlier almost everyone runs into a lot of situations where there were adoptions and step children. A lot of women died in child birth and life expectancies just weren't all that long overall. It was fairly common for people to marry 3, 4 or 5 times.
I suppose that depends a lot about what country (of origin) you are talking.
Within my family it happend three times exactly the other way around: there were only daughters
So a man was "imported (we 'exported' them four times as well
): a male from another 'suitable' family married the oldest daughter, was called at first with his name plus the added ending "called Hinteler" and after a couple of years just overtook the name.
This happend in 15th, 17th and 18th century - from the last time the royal decret is archived.
I'm not much interested in 'family tree' - the history of my own (= name) site is interesting enough, going back to 1287 - and there never have been more than a handful carrying the name ... see above :wink: