Birthday Invitations

My husband`s Grandmother will be celebrating her 100th birthday early April. Her daughter (Mary) and son-in-law (Wayne), grandson, (David) and his wife (Jeannie), granddaughter (LeAnne), husband (Don), and son (great grandson,Ryan) will be hosting the party. On the invitations, what is the best way to word this? Ladies names first or men`s? By birth order?

Thank you for your help,
Jeannie