Patrick Joseph Ryan (1868-1929) was born in Turles, Ireland. He emigrated in the late 1880s to Massachusetts, where he married Margaret T. Meade, a daughter of Irish immigrants. They lost three children in infancy but had better luck when they moved west to Oakland in the early 1900s decade, where they lived at 937 26th Street and had two healthy daughters. He became a naturalized citizen in 1918. The Ancient Order of Hibernians, division #2, sponsored a Mass for him when he died. He’s buried in Hayward.
The Oakland directories list him as a cement worker or contractor from 1904 to 1915. In the 1920 census he said he was a street cleaner for the city, and the 1925 directory listed him as a laborer.
His stamp was always a cockeyed thing with missing and misaligned letters. I have recorded dates of 1910, 1912, 1913 and 1914.
Oakland Underfoot 
23 March 2025 at 4:26 pm
It’s fortunate that you documented these marks when you did. The 1912 and 1914 marks are gone as most of the sidewalks at those locations have been repaved. I haven’t been able to spot the 1913 mark on Brook Street even after several searches. That sidewalk is in really bad shape and much of it is always covered with dirt and debris so it’s very difficult to tell whether the mark is still there. At least the 1910 mark is still there, at least as of a few years ago when I saw it. I also found a 1913 P. Ryan mark in Albany a couple of years ago.