By Whom, Invitations

To whom it may concern I am not sure that I can be helped.I am doing wedding invitations and I was wondering if it is correct grammer to write: "Mary Watson and John Smith Invite you to join us in presence or in thought and spirit as we become husband and wife" Thankyou

I hope this information is current for UK sponsors. If so, and you agree, a letter is easy to draft. … If the visit is for a holiday and you are a relative or a friend, a letter of sponsorship explaining your relationship to the applicant and why the visit is taking place at this particular time...