Hi Miss Poohs,
I had a good feeling about these folks. You can set your mind at rest about the fate of Peter.
This looks like him arriving in New York from Liverpool in 1923:
Dewar, Peter
Age 28
Married
Shipwright
Last permanent address: Scotland, Clydebank
Nearest relative in country whence alien came: Mrs. Kate Dewar, 5 Union Street, Clydebank
Final destination: New Jersey, Eliz Port
Fast forwarding to 1930, we find them both in Elizabeth City, New Jersey, with a daughter born in Scotland. He is indexed as Pattie-- I remembered that Peter and Patrick used to be interchangeable, so it looked right. As I look at it, it might just be Petter with 2 't's. It's one of the messiest census forms I've seen, with things crossed out and written over, but...
New Jersey, Union County, Elizabeth City, Ward 12, Block 111
177 Madison Avenue
Diwar Petter (or Pattie), Head, Age 35, married at 21, born in Scotland, came to the U.S. in what looks like possibly 1923, does something unreadable on the railroad
---Kate, wife, age 26, married at 22, born in Scotland
---Gean(?), daughter, age 13, born in Scotland
Kate may be fibbing with her age a bit, since she is older than Peter, but they both claim to have been married for 14 years, which fits.
Got to get some sleep now, but I'll have another look tomorrow to see if there is anything else.
Regards,
Sarah