Kinship Names: To Capitalize or Not to Capitalize?
Several readers have asked why kinship names, such as names of brothers and sisters, aunts and uncles, etc. are sometimes capitalized and sometimes not. Let’s have a closer look.
Rule 1: Capitalize a kinship name when it immediately precedes a personal name or is used alone, in place of a personal name.
Examples
Andy and Opie loved Aunt Bee’s apple pies.
We adore Uncle Malik, because he always treats us like royalty when we visit him.
Grandma and Grandpa were married in a chapel in a small French village.
Let’s go ask Mom if we can go to the movies.
Rule 2: Do not capitalize a kinship name when it is not part of the personal name but is a word describing the personal name. This usually occurs when the kinship name is preceded by articles such as the, a, or an; or possessive pronouns such as his, her, my, our, or their.
Examples
Andy and Opie loved their aunt Bea’s apple pies.
We adore our uncle Malik, because he always treats us like royalty when we visit him.
My grandma and grandpa were married in a chapel in a small French village.
Let’s go ask my mom if we can go to the movies.
Rule 3: Do not capitalize a kinship name when it follows the personal name or is not referencing a specific person.
Examples
The James brothers were notorious for robbing scores of banks and trains.
There’s not one mother I know who would allow her child to cross that street alone.
Pop Quiz
Select the correct word:
1. We’d travel all day to eat a meal prepared by our aunt/Aunt Ella.
2. When I saw the letter from mother/Mother, I knew it contained only good news.
3. Lydia became a mother/Mother at twenty.
4. I’m sorry son/Son, but we’re not going to have a campfire tonight.
5. Some fathers/Fathers build a campfire every night.
Answers:
1. We’d travel all day to eat a meal prepared by our aunt/Aunt Ella.
2. When I saw the letter from mother/Mother, I knew it contained only good news.
3. Lydia became a mother/Mother at twenty.
4. I’m sorry son/Son, but we’re not going to have a campfire tonight.
5. Some fathers/Fathers build a campfire every night.
Posted on Sunday, July 29th, 2012, at 4:16 pm

I have been checking a proof for my book. I was confused about the capitalization of family titles–and find it all boils down to whether there is a posessive pronoun before the family title followed by their name. After much searching, your article finally satisfied me…providing the handle I needed before accepting the editor’s proofs. Thank you for providing this service.