name (someone or something) after (someone or something)
To give someone or something the same name as someone or something else. It's a bit unusual, but they named their daughter after a river in Tahiti. They named their line of electric cars after a famous 19th-century inventor. I named my son after his grandfather on his mother's side.
name someone after (someone else)
and name someone for someone elseto give someone (usually a baby) the name of another person. We named our baby after my aunt. My parents named me for my grandfather.
name after
Also, name for. Give someone or something the name of another person or place. For example, They named the baby after his grandfather, or The mountain was named for President McKinley.