Eviction Notices: Eviction of an RV From a Rented Spot on Private Land

My question involves landlord-tenant law in the State of: Oregon. My wife & I own our own RV. We have an eight yr. old daughter. Seven months ago we signed a lease to rent a proper/legal RV spot on private land. The owners had just bought the three in a half acres of land with a double wide home on it to rent the home out & become first time land lords. I was hired to clean up the property & then was offered the ability to rent the RV space that was discovered for $200 a month plus fifteen hours of labor as the maintenance bringing the total cost of rent to $350 monthly with electric & trash included. In all the seven months we have rented we had never violated any part of our lease & or agreements. Never was late on rent & even paid several months ahead. Have receipts & documents. The landlords even just provided a great letter of reference defining how we were outstanding renters, a great family & such. In the community we reside in there is no places to rent. Rentals are extremely difficult & all the RV parks are full or will not accept an RV over ten yr.'s old no matter how nice it is. We have nowheres to go. The landlords even stated numerous of times that our rental here was secured & safe till spring. Have their statements recorded. In the tenant laws I read that verbal commitments were just as binding as the written lease. Now without warning, without first notifying us in written notice that they intended to evict before filing an eviction notice, violating verbal & written lease agreements with us, having no cause as we were never in violation of our lease, behind on rent, never damaged the property, & so on they are evicting us. I read that because we own our own home{via a manufactured home/an RV} & that we are renting a proper space that they have to provide a "good cause" eviction notice, not a "without cause". How do we defend our family from this?? What are the Tenant laws concerning evictions in Oregon for those with RV's, renting a legal spot, & having a binding lease & verifiable proof that the landlords stated verbally that we were/our rental was safe & secure till spring ???? Thank-you.

Eviction Notices: Eviction of an RV From a Rented Spot on Private Land