Alonzo (first name only) has been extremely popular in our family tree since the very earliest 1800's. We don't know where it came from as we don't have Italian, Spanish or Portuguese ancestors. We are mostly English. I can't find anyone who actually used Alonzo in their daily lives instead either using an abbreviated version or their middle name. So we have had lots of ancestors that used Lonz, Lon or Lonny in their daily lives. Coincidentally, both of my grandfathers were named Alonzo (no relation to each other except through the marriage of their son/daughter). They were Alonzo Perry who went by Lon exclusively and Alonzo Glenn who went by Glenn. There is one cousin in my generation who carries the name and he goes by Lonny or Lon but never Alonzo. I think Alonzo is a brilliant name! I love it. I also like Lonny.
― Anonymous User 8/4/2019
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Alonzo Hawk is the name of a scheming villain in various Disney movies, played by Keenan Wynn.
― Anonymous User 1/24/2019
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In 2018, 48 is the most common age for an American (U.S.) Alonzo who is registered male with the Social Security Administration. It is the 1156th most common male first name for living U.S. citizens.
― Anonymous User 10/8/2018
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The year before Doctor Who, "Allons-y, Alonzo" appeared as dialogue in the movie Pierrot le Fou (1965) by Jean-Luc Godard, although it's possible that it's a common francophone pun.
Alonzo Andretti Muhlach, also known as Alonzo Muhlach, is a Filipino child actor. He is known for his role as Prinsipe Vladimir in My Big Bossing segment: Prinsesa. In January 2017, he joined the kid's version of Your Face Sounds Familiar Kids on ABS-CBN.
Alonzo was the first name of Midshipman Frame in the first episode of Doctor Who season three. The Doctor said, "There's something else I've always wanted to say: allons-y, Alonzo!"