06/21/2026
Stop us if you've heard this one: A man named Patrick leaves Ireland at the height of the Potato Famine, settles in Philadelphia, and marries Mary Ann, the daughter of Irish immigrants. Patrick and Mary Ann settle down and have thirteen children.
So far, nothing too unusual. Irish families tended to run on the larger side, especially in the late 19th century.
Here's where things get interesting: one of Patrick and Mary Ann's kids, Matthew, takes an interest in baseball and winds up with the Baltimore Orioles. And he's good.
Like, really, really good. ☘⚾
In his 1886 rookie season, Matthew Aloysius Kilroy, born on this day in 1866, fanned 513 batters and threw 66 complete games.
Now, the experts will tell you the game was different back then, and they're right. But still — Matt Kilroy was an absolute beast on the mound. In his second season, his strikeout total fell to a more pedestrian 217, thanks to a new rule requiring four strikes for a strikeout. Even so, he still managed to win 46 games.
Before his third season, Matt married Frances Denny, herself the daughter of Irish immigrants. The newlyweds settled in Philadelphia and eventually had seven children.
That year, Matt suffered a shoulder injury during a collision on the basepaths. His production waned, likely due to the injury combined with a massive workload — in his first four seasons, Kilroy threw 1,974 innings.
Kilroy bounced around for a few more seasons, with stints playing for the Boston Reds, King Kelly's Killers of the Players' League, followed by turns with the Washington Senators, Louisville Colonels, and Chicago Orphans. He retired after the 1898 season with 141 wins, a 3.47 ERA, and 1,170 strikeouts.
After retiring, Matt and Frances continued to live near Shibe Park, where he ran a saloon. He was rumored to stop by the ballpark to give pitching tips to A's hurlers — likely with the blessing of a fellow Irishman named Connie Mack.
Matt Kilroy passed away in Philadelphia on March 2, 1940, at the age of 73.