Deposit through customer

[S. Sliackus]

Hello,
I am new to GnuCash, so sorry for irrelevant questions if it happens.
How Can I retain Customers name when depositing money? I have a 
situation when there is no sales process - no invoices, no payables, 
receivables. I do charity accounts and we collect donations (so there is 
no sales process, money is deposited directly to bank account), but when 
I deposit donated money to bank, I only able to have donors (aka 
Customers) name in Description, what means that I cannot make reports on 
how much which donors donated over time.
Any solutions to that?
Thanks
Saulius